CN212560805U - Water level sensor of washing machine - Google Patents
Water level sensor of washing machine Download PDFInfo
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- CN212560805U CN212560805U CN202020827885.3U CN202020827885U CN212560805U CN 212560805 U CN212560805 U CN 212560805U CN 202020827885 U CN202020827885 U CN 202020827885U CN 212560805 U CN212560805 U CN 212560805U
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Abstract
The utility model discloses a washing machine level sensor, including the casing, with the detection zone of pail intercommunication, the internal connection of detection zone has the trachea, the trachea is connected with the sensor air chamber, the sensor air chamber is located the pail top, the trachea towards behind the pail bottom extension the sensor air chamber extends. The air pipe is arranged in the detection area, and then the air pipe extends downwards firstly and then extends upwards to the sensor air chamber, so that the air pressure change detected by the sensor air chamber is the air pressure change generated by adding water, and the detection precision of the water level sensor is improved. A certain amount of water is added to generate a certain amount of water pressure, and the certain amount of water pressure generates a certain amount of air pressure generated when a certain amount of air in the detection area enters the air pipe, so that the air chamber of the sensor detects the air pressure change value and feeds back the air pressure change value to a corresponding signal of the controller.
Description
Technical Field
The utility model belongs to the technical field of the domestic appliance technique and specifically relates to a washing machine level sensor is related to.
Background
At present, in the industry of washing machines, a water level sensor is generally arranged, the water level sensor transmits a detected water level signal to a control end through a signal line, and the control end controls the opening and closing of a water inlet valve according to the received signal.
Adopt the detection zone that links to each other with the pail among the prior art, be full of the air in the detection zone, the detection zone external connection has the trachea, thereby through what compressed air in the detection zone that adds water to the trachea, the trachea reconnection sensor air chamber, the change that detects atmospheric pressure through the sensor air chamber detects hydraulic change, and then detects the water level in the pail.
However, the detection in the prior art has the following problems: when adding water in the pail, the air in the detection zone can be followed and flowed in the pail to make the compressed volume of air not accurate, lead to the atmospheric pressure change that the sensor air chamber detected also inaccurate, finally influence the detection precision of water level.
Therefore, a water level sensor for a washing machine is needed to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
The utility model discloses not enough to among the prior art, provide a washing machine level sensor, through setting up the trachea at the detection zone, then upwards extend to the sensor air chamber after with the trachea earlier downwardly extending again, water is added and is produced water pressure, and water pressure forces the air admission trachea and produces atmospheric pressure for the atmospheric pressure change that the sensor air chamber detected is that water adds produced atmospheric pressure change, has improved the detection precision of sensor.
In order to solve the technical problem, the utility model discloses a following technical scheme can solve: a water level sensor of a washing machine comprises a shell and a detection area communicated with a washing barrel, wherein an air pipe is connected in the detection area, the air pipe is connected with a sensor air chamber, the sensor air chamber is positioned above the washing barrel, and the air pipe extends towards the sensor air chamber after extending towards the bottom of the washing barrel.
Further optimize, be equipped with the breach on the pail inside wall, the detection zone passes through the breach with the pail intercommunication.
Preferably, a detection housing is tightly attached to the outer side wall of the washing tub, and the detection housing and the outer side wall of the washing tub form a detection area.
Further optimize, the bottom of detecting the casing is equipped with shelters from the lid, the trachea runs through shelter from the lid setting.
Preferably, the gap is located at the bottom of the inner side wall of the washing tub.
Further preferably, the sensor air chamber is arranged on the housing.
Further preferably, the detection shell is a semicircular shell.
Preferably, the upper end of the air tube is located near the top of the detection zone.
The beneficial effects of the utility model reside in that: 1. the air pipe is arranged in the detection area, and then the air pipe extends downwards firstly and then extends upwards to the sensor air chamber, so that the air pressure change detected by the sensor air chamber is the air pressure change generated by adding water, and the detection precision of the water level sensor is improved. A certain amount of water is added to generate a certain amount of water pressure, and the certain amount of water pressure generates a certain amount of air pressure generated when a certain amount of air in the detection area enters the air pipe, so that the air chamber of the sensor detects the air pressure change value and feeds back the air pressure change value to a corresponding signal of the controller. 2. Because the air pipe extends downwards firstly and then extends upwards to the sensor air chamber, and the position of the sensor air chamber is positioned above the washing barrel, namely, the maximum value of the air pressure change value in the air pipe is also larger than the maximum value of the added water, the corresponding air pressure change value can be detected by the sensor air chamber no matter how much water is added by a user.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will discuss the drawings required to be used in the description of the embodiments or the prior art, it is obvious that the technical solutions described in conjunction with the drawings are only some embodiments of the present invention, and for those skilled in the art, other embodiments and drawings thereof can be obtained according to the embodiments shown in the drawings without creative efforts.
Fig. 1 is a schematic structural view of a water level sensor of a washing machine according to the present invention.
Fig. 2 is a schematic view of a structure of a washing tub according to the present invention.
Fig. 3 is a schematic view of a top view of a washing tub according to the present invention.
Fig. 4 is a schematic view of the air tube and the shielding cover of the present invention.
In the figure: the device comprises a shell 1, a washing tub 2, an air pipe 3, a sensor air chamber 4, a notch 5, a detection shell 6 and a shielding cover 7.
Detailed Description
The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments described in the present disclosure, all other embodiments obtained by a person skilled in the art without creative efforts are within the scope of the present disclosure.
An embodiment of the utility model provides a washing machine level sensor, as shown in fig. 1-4, including casing 1, with the detection zone of pail 2 intercommunication, be connected with trachea 3 in the detection zone, trachea 3 is connected with sensor air chamber 4, sensor air chamber 4 is located pail 2 top, trachea 3 towards behind 2 bottoms extensions of pail 4 extend sensor air chamber 4.
The sensor air chamber 4 can detect the change value of the water pressure through detecting the air pressure change value fed back by the air pipe 3, and can detect the water adding amount through the water pressure change value, so that whether the water level height meets the requirements of users or not is determined.
Be equipped with breach 5 on the 2 inside walls of pail, the detection zone passes through breach 5 with pail 2 intercommunication.
A detection housing 6 is tightly attached to the outer side wall of the washing tub 2, and the detection housing 6 and the outer side wall of the washing tub 2 form a detection area.
The bottom of the detection shell 6 is provided with a shielding cover 7, and the air pipe 3 penetrates through the shielding cover 7.
The gap 5 is located at the bottom of the inner side wall of the washing tub 2.
The sensor gas chamber 4 is arranged on the housing 1.
The detection shell 6 is a semicircular shell 1.
The upper end of the air tube 3 is located near the top of the detection zone. The upper end setting of trachea 3 is more favorable to near the top of detection zone water pressure to impress atmospheric pressure to trachea 3 in, guarantees the accuracy nature that detects.
The utility model discloses an use as follows: the user sets up the volume that needs to add water in advance, then along with the continuous interpolation of water, because detection zone and pail 2 intercommunication, rivers produce water pressure, water pressure extrudees the air in the detection zone, extrude the air to trachea 3 in, produce how much big water pressure promptly, to what big atmospheric pressure of extrusion in the trachea 3 promptly, then trachea 3 is connected to in the sensor air chamber 4, sensor air chamber 4 detects this atmospheric pressure size, and feed back to the controller, what amount of water that this atmospheric pressure size corresponds is gone out to the controller detectable. Then when the water adding amount required by the user is met, the controller controls the water inlet valve to close to stop adding water to the washing tub 2.
To sum up, the utility model discloses set up trachea 3 in the detection zone, then upwards extend to sensor air chamber 4 after 3 first downwardly extending of trachea for the atmospheric pressure that sensor air chamber 4 detected changes and is the atmospheric pressure change that water adds produced, has improved level sensor's detection precision. A certain amount of water is added to generate a certain amount of water pressure, and the certain amount of water pressure generates a certain amount of air pressure generated when a certain amount of air in the detection area enters the air pipe 3, so that the air pressure change value is detected by the sensor air chamber 4 and fed back to a corresponding signal of the controller. The water adding amount is accurately controlled, and the accurate detection of the water level sensor is achieved.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive. The scope of the invention is indicated by the appended claims, rather than the foregoing description, and all changes that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. The utility model provides a washing machine water level sensor, includes the casing, with the detection zone of pail intercommunication, its characterized in that: an air pipe is connected in the detection area, the air pipe is connected with a sensor air chamber, the sensor air chamber is located above the washing tub, and the air pipe extends towards the sensor air chamber after extending towards the bottom of the washing tub.
2. A water level sensor for a washing machine according to claim 1, wherein: be equipped with the breach on the pail inside wall, the detection zone passes through the breach with the pail intercommunication.
3. A water level sensor for a washing machine according to claim 2, wherein: the detection shell is tightly attached to the outer side wall of the washing tub, and the detection shell and the outer side wall of the washing tub form a detection area.
4. A water level sensor for a washing machine according to claim 3, wherein: the bottom of the detection shell is provided with a shielding cover, and the air pipe penetrates through the shielding cover.
5. A water level sensor for a washing machine according to claim 2, wherein: the gap is positioned at the bottom of the inner side wall of the washing tub.
6. A water level sensor for a washing machine according to claim 1, wherein: the sensor air chamber is arranged on the shell.
7. The washing machine water level sensor of claim 4, wherein: the detection shell is a semicircular shell.
8. A water level sensor for a washing machine according to claim 1, wherein: the upper end of the air tube is located near the top of the detection zone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020827885.3U CN212560805U (en) | 2020-05-18 | 2020-05-18 | Water level sensor of washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020827885.3U CN212560805U (en) | 2020-05-18 | 2020-05-18 | Water level sensor of washing machine |
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| Publication Number | Publication Date |
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| CN212560805U true CN212560805U (en) | 2021-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020827885.3U Active CN212560805U (en) | 2020-05-18 | 2020-05-18 | Water level sensor of washing machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023169156A1 (en) * | 2022-03-10 | 2023-09-14 | 青岛海尔洗衣机有限公司 | Drum washing machine |
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2020
- 2020-05-18 CN CN202020827885.3U patent/CN212560805U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023169156A1 (en) * | 2022-03-10 | 2023-09-14 | 青岛海尔洗衣机有限公司 | Drum washing machine |
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